Home / 378,919.28-567,998.76-129,430.64

Finding the Fourth Proportional to 378,919.28, 567,998.76 and 129,430.64

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Solution

The fourth proportional to 378,919.28, 567,998.76 and 129,430.64 is: 194,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,919.28 : 567,998.76 = 129,430.64 : x
  2. Step 2: Convert to fraction form
    378,919.28/567,998.76 = 129,430.64/x
  3. Step 3: Cross multiply
    378,919.28x = 567,998.76 × 129,430.64
  4. Step 4: Simplify right side
    378,919.28x = 73,516,443,026.01
  5. Step 5: Solve for x
    x = 73,516,443,026.01/378,919.28
  6. Step 6: Final answer
    x = 194,016.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.